I came up with an unusual solution. I love fabric & have bought way too much, but love it to much to get rid of it. One day I'll use it.....oh, no... I can't be a hoarder, can I?
I have much of it stored in boxes & plastic containers. I ran out of storage space for the boxes & slid one under my sewing area. Whoopee! The Foot doesn't slide forward anymore. This is very similar to the idea of putting a 2x4 piece of wood down. I'm also, very familiar with sewing barefoot holding on to the foot with my toes. That was a real hoot! But it does work.